The tuner has quite a bit of experience tuning road cars and rally cars here and so I'm confident in his ability.
The technician doing the conversion has done it twice previously to two Cosworths here without any complaints so I guess I will just have to trust him, bought the items to his spec and he is who the tuner reccomends.
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I guess the trick will be to tune it to maximize the engine components but keep it safe and reliable. Its a 1 owner car but most of the mods were done so long ago and my father doesn't remember the specs on the things he got. Port and polished head, bored block, uprated pistons and rods, uprated big turbo.
With the poor quality of petrol here in Jamaica I think conservative tune is best.